These are XCI files as used in the example designs for using Xillyp2p on an
optical fiber link:

https://www.xillybus.com/xillyp2p/optical-fiber-ultrascale-gth

and

https://www.xillybus.com/xillyp2p/optical-fiber-7-series-fpga-gtx

These files were created and used with Vivado 2025.1, and will most likely
work on later versions as well, possibly after an automatic upgrade of the
IPs.
